Notifies clients that a property value has changed.
.NET: This interface appears as System.ComponentModel.INotifyPropertyChanged.
The INotifyPropertyChanged interface inherits from the IUnknown interface. INotifyPropertyChanged also has these types of members:
The INotifyPropertyChanged interface has these events.
|PropertyChanged||Occurs when a property value changes.|
When building Windows Store apps with the Microsoft .NET Framework, this interface is hidden and developers should use the System.ComponentModel.INotifyPropertyChanged interface.
The INotifyPropertyChanged interface is used to notify clients, typically binding clients, that a property value has changed.
For example, consider an
Employee object with a property called
Name. To provide generic property-change notification, the
Employee type implements the INotifyPropertyChanged interface and raises a PropertyChanged event when
Name is changed.
The PropertyChanged event can indicate that all properties on the object have changed by using String.Empty for the PropertyName property of the PropertyChangedEventArgs. Note that you cannot use null (Nothing in Visual Basic) for this like you can in Windows Presentation Foundation (WPF) and Microsoft Silverlight.
The PropertyChanged event can indicate that indexer properties on the object have changed by using a PropertyName value of "Item[indexer]" for specific indexers or "Item" for all indexers. Note that C++ does not currently support binding to indexers. For a workaround, see the XAML data binding sample.
Minimum supported client
Minimum supported server
|Windows Server 2012|
Minimum supported phone
|Windows Phone 8.1 [Windows Runtime apps only]|